Actuating device for the throw-off mechanism of printing-presses



C. A. SODERLUND.

ACTUA'HNG DEVICE FOR THE THROW-OFF MECHANISM OF PRINTING PRESSES.

APPLICATIUN FILED NOV. 7 IQIT.

Patented Nov. 16, 1920.

iiivehtion. resi CARL A. SODERLUND, OF BROOKLYN, NEW YGIRK.

ACTUA'I IJING DEVICE FOR THE THROW-OFF MECHANISM OF PBINTING-PREBSES.

Specification of Letters Patent.

Patented Nov. 16, 1920.

Application fll-ed November 7, 1917. Serial 1%. 200,824.

To all whom it may concern:

Be it known that I, CARL A. SonnRLUND, a citizen of the United States, residing at Brooklyn in the county of Kings and State of New York, have invciitcd new and useful. Improvements in Actuating'Devices for thc Throw- )fi' Mechanism of Printing-Presses, of which the following is a specification.

This invention relates to actuating devices forth'ethrow-o mechanism of printing presses an seeks for its principa object to provide adevice of this character embodies a plurality of relatively ad jizstahle sheet enga V ing devices whereby the saiiie may he quiclfly applied and adjusted with relation to the Work. I

Another obj-ct of theinvention is the pmvfsi 'n of a evicc of this character which einhodies a plurality of al'ined rock shafts having se'c'iired thereto keepers. which are ada lt'ed a cotiperate with latches secured on he rock shaft to the throw-of? mechanim, saia shaft also being adapted to have adjustably iiiounted thereon sheet engaging levices'l, whereby upon improper feeding of x jesheets froth the cylinder, the sheet engiiigiing devices will cause the keepers to en a e the atches and coiiperate therewith to a rest niotitiii off the Tool; shaft inorder t6 )1 int ofl' further 'oprgitibn of the ass.

ll fui'ther object of the invention is the "imitate of an actuating device for the illicit-dd inechanism'of printing. machines comprising independently movable a ded t 1; ha t b o i l fivl adi s a fies 'htj- 0i1i under which the sheets are a e '5 b si fi fl iwwemem hreiis a i 'i s ai i s h yme ti a st e in M riet we vwit hiet ibifv-o n iechahismto top "l't ll et op istiaajf the press upon the imprope'rfeedqui t: sheet from the cylinder. H fi het b /c i ve on is h iifi sen at a we; fl i haiafi r. wh c is" simple in constrncti on, inex en ive" to manufacture, and; thoroughly reliable and e 1 in ces t fiv. a p a "fthsegndiothe bi ets wt es iii-the novel construction. combination and arrangements of parts fully described and pointed out in the folliowlng idescrip ion and claiins' end IllII S- -ii1 the accompanying drawings in ii c v e ra sfi a men rs ec i .ig iewlot thdrdeviq showing a poitioxiofthe tions 23, which are adapted rocking;- stop shaft of the throw ofi' mechamsm.

F ig. 2 is a sectional view through the rock shaft and the keeper support.

Fig. is a similar view through the rock shaft and the sheet engaging device support.

Fig. 4 is a sectional view on the linc 4 4, of Fig. 3. v

Fig. 5 is a sectional view on the line 5-5 of Fig. 1.

In printing presses or like machines which act upon sheets fed therethrough, certain mechanism is provided which is adapted to stop the machine and this mechanism usu ally includes a hollow rock shaft such as shown in the drawings and substantially illustrated in the patent to Gustafson No. {12,562. No claim is laid to the stop mechanlsm' which may be of any form employing a rock shaft under which the sheets pass in their movement through the machine Referring to the drawings by characters of reference (A), designates the rocking stop shaft of a throw-off mechanism which is, provided with the usual latches, (B). c amped theretohy meansof the bolts (C). t he actuating device embodies a par of alined rock shafts 10, mounted in t 1e hearing arms 11 which are 'eCured to the press immediately beyond the cylinder. The shafts 10, are provided near their extremities wi h the ahutment pi] s 12, Whifchare a pj q is v th Fai e 13, p viae on the arms 11.111 .orde to assa th e stia t 10 i.ih onfe ilfectien. The in er ends of the stain, 10, 159 Fjc it d the bearing; provided on ad arm 15.

en" 0 7 it "6 s ft .1051 6 ach f e the eegir siipports1 6,which aye has wan e tries 17-, rasse s rif Se crew ar t ad d at he keeper, su p rt nd f illi d t0 a e .t e i 0, by t e m as may e sense d he ame K epe was 19, are adapted to be re eived in the 0 en 2'0, pi'o'vided inthe supfiortsvlfi, air are retained place by means of set screws 21. w are threaded into the support and adap ed p to enter the notches 22, i'n the keeper arms 19. Th free extremity of the arms 19, are provided with down-turned porto coiiperate with the latches (B), when the shaft 10, is

rotated in one direction, meaty the time W 1th is secured E i ohveni'iit DO'rtionof ing stop shaft (A) will be arrested in its movement to throw-off the press. Ad'ustably arranged on the shaft 10 throug out the length of the same, is a plurality of supports 24, which are provided with transversely arranged openings 25, for the reception of the shafts 10. A set screw 26, is threaded into each support 24, and is adapt ed to engage the shaft 10, in order to retain the support in its adjusted relation thereto. The support is provided with an extended portion 27 which is provided with a square opening 28, for the reception of a similarly formed portion 29, on the detector arms 30. A notch 31, is provided in the portion 29, and is adapted to receive a looking portion 32, provided on the spring arm 33, which is attached to the upper face of the support 24, whereby the sheet engaging arms 30, may be detachably associated with the support. The inner extremity of the portion 29, is beveled as at 34, to admit of the easy insertion of the same within the opening.

In operation of the device, the detector arms 30 are primarily adjusted on the shafts 10 to admit of the normal feeding of the sheets thereunder durin their movement through the press, this adjustment being accomphshed by turning the supports 24 on the shafts 10 and securing them by advancing the set screws against said shafts. The keeper su ports 16 are adjusted on the shafts so that t e down-turned portion 23 of the arms 19 will be held in superposed relation to the latches (B), under the weight of the arms 30, the weight of which slightly overbalances the weight of the arms 19 and as heretofore set forth, the pins 12 and 13 serve to limit the movement of the shafts 10 whereby the arms 30 when properly adjusted will be arranged slightly above the sheets during their normal passage through the machine. Should the sheets buckle or become mutilated in a manner which would choke the machine, and continue to move therethrough, the arms 30 would belifted, thereb lowering the down-turned portions 23 of t e arm 19 into contact with the up or face of the latches (B) and upon the orward motion of the rock shaft, the portion 23 would spring down in rear of the latch, lockin the same and arresting further motion 0 said shaft. Upon arrestin the mo- 1 tion of the rock shaft (B) it will e understood that certain stopping mechanism is brought into play for cutting off further operation of the machine. B providing a plurality of alined rock sha ts, it will be seen that the slightest defective feedin of a sheet thereunder. will operate the trowoif mechanism, as the weight of only two engagin arms and the one rock shaft will necessarily be lifted. In some instances it has been found practical to run several pieces of work through the machine simuh taneously and by providing more than one rock shaft or a divided shaft, a plurality of detecting groups are had which will readily inform the operator of the machine which piece of work has caused the stoppage.

While I have shown and described a simple and preferred form of the invention, I desire to have it understood that such changes and alterations as fall within the scope of the appended claims, may be rcsorted to when necessary and that the showin r is merel illustrative.

Vhat is clhimed as new is 1. The combination with a throw-oil" mechanism adapted to prevent o eration of a printin press, of alined rock s afts, relatively a justable devices thereon, under which the sheet is adapted to ass in its movement throu h the ress, and eepers detachably secure to sai shafts, and adapted to cooperate with said throw-off mechanism to arrest further operation of the press upon improper feeding of the sheets from the cylinder.

2. In a printing ress of the character employing a rock shaft for the throw-01f mechanism having latches thereon, the combination with the rock shaft, of movable keepers co-acting with said latches for preventing operation of said press, and independently operable groups of sheet actuated devices for transmitting motion to said keepers.

3. An actuating device for the throw-01f mechanism of printing presses, comprising, a rock shaft, latches secured thereto, relatively ad'ustable independently movable groups 0 sheet engaging devices under which the sheets pass in their movement through the ress, keepers adapted to coact with said atches and means actuated by said devices for operatively moving said keepers relatively of said latches.

4. In a printing machine, the combination with a throw-oil mechanism therefor, comprising a rock shaft, latches secured to the rock shaft, a plurality of detector groups, rocking shafts for each of said groups and a keeper secured to each of said rocking shafts adapted to co-act with one.of the latches on the first mentioned rock shaft to arrest the motion of the same upon the improper feeding of the sheet under the detector groups whereby further operation of said machine is prevented.

5. The combination with stops adapted to control the throw-off mechanism of a printing press, of independently movable alined rock shafts, relatively adjustable detector arms arranged on said rock shafts under which the sheets pass in their movement through the machine and keepers adjustably secured to each rock shaft, said keepers adapted to cooperate with said stopsto control "said throw-off mechanism to'cutofl fur ther operation of the press upon improper passage of the sheets under the detector arms.

6. The combination with stop mechanism adapted to control the operation of a printing press, of independently movable rock shafts, means arranged on said rock shafts adapted to co-act with said stop mechanism, detector arms controlling said means and operable b the sheets passing thereunder, supports t erefor movable throughout the length of and about the rock shaft, and means for securing the same with relation to the rock shaft.

7 The combination with stop mechanism adapted to control the operation of a printing press, of independently movable rock shafts, means arranged on said rock shafts adapted to coast with said stop mechanism, detector arms controlling said means and operable by the sheets passing thereunder, supports therefor movable throughout the length of and about the rock shaft, and means for securing the same with relation to the rock shaft, said supports provided with sockets for the reception of said arms, a notch in said arms, an opening in said support, a resilient member secured to the support and provided with a locking portion extending into said opening for engagement with the notch in the arm in order to secure the arms to said supports.

In testimony whereof I ain'x m signature.

CARL A. SODEftLUND. 

